洛谷一键跳转vjudge插件

支持洛谷一键跳转vjudge，只需在题目页面点击右键，选择“跳转vjudge”即可。

// ==UserScript==
// @name         洛谷一键跳转VJudge
// @namespace    http://tampermonkey.net/
// @version      1.0.0
// @description  支持洛谷所有题目跳转VJudge，修复CF带数字后缀的编号匹配
// @author       Tangyixao
// @match        https://www.luogu.com.cn/problem/CF*
// @match        https://www.luogu.com.cn/problem/SP*
// @match        https://www.luogu.com.cn/problem/AT*
// @match        https://www.luogu.com.cn/problem/UVA*
// @match        https://www.luogu.com.cn/problem/P*
// @grant        none
// ==/UserScript==(function () {"use strict";function getVjudgeUrl() {const luoguUrl = window.location.href;const luoguPath = window.location.pathname;if (luoguPath.startsWith("/problem/P")) {const pMatch = luoguPath.match(/P(\d+)/);return pMatch? `https://vjudge.net/problem/洛谷-P${pMatch[1]}` : null;} else if (luoguPath.startsWith("/problem/AT_")) {const atMatch = luoguPath.match(/AT_(\w+)/);return atMatch? `https://vjudge.net/problem/AtCoder-${atMatch[1]}`: null;} else if (luoguPath.startsWith("/problem/UVA")) {const uvaMatch = luoguPath.match(/UVA(\d+)/);return uvaMatch ? `https://vjudge.net/problem/UVA-${uvaMatch[1]}` : null;} else if (luoguPath.startsWith("/problem/CF")) {// 修复CF编号匹配const cfMatch = luoguPath.match(/CF(\d+[A-Za-z\d]*)/);return cfMatch? `https://vjudge.net/problem/CodeForces-${cfMatch[1]}`: null;} else if (luoguPath.startsWith("/problem/SP")) {let spojId = null;const originalLink = document.querySelector('a[href*="spoj.com/problems/"]',);if (originalLink) {spojId = originalLink.href.split("/problems/")[1].replace("/", "");} else {const pageText = document.body.innerText;const spojTextMatch = pageText.match(/SPOJ\s*[-\s:]([A-Za-z0-9_-]+)/i);spojId = spojTextMatch ? spojTextMatch[1].trim() : null;}return spojId ? `https://vjudge.net/problem/SPOJ-${spojId}` : null;}return null;}const copyBtn = Array.from(document.querySelectorAll("button")).find((btn) => btn.innerText.trim() === "复制题目",);const vjudgeUrl = getVjudgeUrl();if (copyBtn && vjudgeUrl) {const jumpBtn = document.createElement("button");jumpBtn.innerText = "跳转VJudge";const copyStyles = window.getComputedStyle(copyBtn);["backgroundColor","color","border","borderRadius","padding","fontSize","fontFamily","cursor","height","lineHeight","textAlign","whiteSpace","verticalAlign","display","marginTop","marginBottom",].forEach((styleProp) => {jumpBtn.style[styleProp] = copyStyles[styleProp];});jumpBtn.style.marginLeft = "5px";jumpBtn.style.minWidth = copyStyles.minWidth || "80px";jumpBtn.addEventListener("click", () => {window.open(vjudgeUrl, "_blank");});copyBtn.parentNode.insertBefore(jumpBtn, copyBtn.nextSibling);} else if (!vjudgeUrl) {const platform = luoguPath.match(/\/problem\/(\w+)/)[1].slice(0, 2);console.warn(`洛谷${platform}题目跳转VJudge：未找到有效题目标识符，请检查页面格式`,);}
})();